Lion's furrow (also known as the lion's wrinkle) belongs to the group of facial wrinkles. Lion's wrinkle is usually a vertical furrow that develops between the eyebrows. It occurs in both men and women. The small muscle that creases the eyebrows is responsible for its formation. Therefore, the lion's wrinkle is classified as a mimetic lesion. Lion's wrinkle can be removed with the help of aesthetic medicine treatment.